Title :
Node localization algorithm based on RSSI in wireless sensor network
Author :
Wang Suzhe ; Li Yong
Author_Institution :
Sch. of Electron. & Inf., Northwestern Polytech. Univ., Xi´an, China
Abstract :
In order to reduce the effect on node positioning accuracy due to received signal strength (RSSI) fluctuation in wireless sensor network (WSN), a grid localization algorithm based on RSSI probability distribution is proposed. From analyzing the wireless propagation channel model, it divides the location area into grids. Through comparing the value of RSSI probability likelihood function in grid, the location of the unknown node is obtained. The simulation result shows that this algorithm could effectively improve the performance of positioning accuracy and have better stability.
Keywords :
probability; radio direction-finding; wireless sensor networks; RSSI probability likelihood function; WSN; grid localization algorithm; node localization algorithm; node positioning accuracy; received signal strength fluctuation; wireless propagation channel model; wireless sensor network; Likelihood Function; Localization; RSSI; Wireless Sensor Network;
Conference_Titel :
Signal Processing and Communication Systems (ICSPCS), 2012 6th International Conference on
Conference_Location :
Gold Coast, QLD
Print_ISBN :
978-1-4673-2392-5
Electronic_ISBN :
978-1-4673-2391-8
DOI :
10.1109/ICSPCS.2012.6507963
